Ah yes Freddie, I know F.O.N.D. Keith Skipper was associated with them.
And they have competitions for people to demonstrate their accent with public recitations etc.
The late Michael Brindid (from Horning) won a while ago. I have both his little books ('I Din't Say Nothin' and 'I Din't Say Nothin' Ag'in')

Keith Skipper wrote a compilation of Norfolk yarns called 'Broad Smiles', I have that too.
And Old Barney's broadcasts in book form ('Dew Yew Keep A-Troshing')

In fact, my bookshelves are crammed with all sorts of books about accents and dialect, including 'Let's Talk Strine' (Australian accent)
I know it's important to keep the old ways of speech alive, but in fact one just can't. Language evolves and it can't be forced to remain in aspic.
That's where folk song is important, because that DOES continue, and in my view is a repository for all sorts of traditions and oral history.